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Aiwa AV-D77 receiver power issues


Continuing our discusion. The issues are as follows:

When I first plug in the system, it clicks with an audible "click-clunk". Then, when I go to cycle the power on, the system will click but the power relay won't latch. I've tried the power-enter button to reset, but doesn't do anything to resolve it. Finally, if I cycle the power button erratically, then sometimes it will latch... sometimes it goes into this endless cycle of clicking about every second... click....

I now have the schematics for the receiver, but where should I begin? Seems to me, it is in the power board (with the transistior,cap and latching relay... but I could be completely wrong.

Any assistance is GREATLY appreciated.

- Clue

Posted by on

  • Dennis Mayberry Jan 29, 2009

    I have the same problem as clue posted Nov 22, 2008 on my av-d77. Hit the pwr switch and all I get is a click-click. I tried your solution posted Nov 22, 2008 but I don't have a scope. Used a digital multimeter and got a reading of 12.8 volts.

    Where would I go to buy a ckt card to replace the one in my receiver? If that is the problem. I have been trying to find a source for the relay RY001 thinking that might be the problem. The relay not holding. A source for the card would be nice also. (F PT C. B)

    - Searching



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Please confirm 9 volts on Power Board as shown in below picture...

Aiwa AV-D77 receiver power issues - 2d907aa.jpg
Regarding click-click-click sound of relay its caused by Serial Clock and Serial Data signal failure in digital ICs. Please confirm above signals by using Oscilloscope.

Posted on Nov 22, 2008


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